Asus H81-M2 User Manual page 27

10. Speaker connector (4-pin SPEAKER)
The 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you hear system beeps and warnings.
H81M2
H81M2 Speaker Out connector
11. USB 3.0 connector (20-1 pin USB3_E12)
This connector is for additional USB 3.0 ports. Connect the USB 3.0 bracket cable to
this connector, then install the USB 3.0 bracket to the rear side of the chassis. If your
chassis supports front panel ports, you can use the ASUS USB 3.0 header to install
additional front panel USB 3.0 ports.
H81M2
H81M2 USB3.0 Front panel connector
12. LPT connector (26-1 pin LPT)
The LPT (Line Printing Terminal) connector supports devices such as a printer. LPT
standardizes as IEEE 1284, which is the parallel port interface on IBM PC-compatible
computers.
H81M2
H81M2 Parallel Port Connector
ASUS H81M2
SPEAKER
PIN 1
USB3_E12
PIN 1
USB3+5V
USB3+5V IntA_P1_SSRX-
IntA_P2_SSRX- IntA_P1_SSRX+
IntA_P2_SSRX+ IntA_P1_SSTX-
GND GND
IntA_P2_SSTX- IntA_P1_SSTX+
IntA_P2_SSTX+ GND
GND IntA_P1_D-
IntA_P2_D- IntA_P1_D+
IntA_P2_D+ GND
LPT
PIN 1
1-19